Sir Robert de Roos
- Bef 1269( = Descendancy chart to this point, = Expand, = Collapse)
- 1 Sir Robert de Roos d. Bef Nov 1269
- Christian Bertram
- 2 William de Roos
- 2 Ida de Roos
- 2 Robert de Roos d. Bef 20 Apr 1274
- Margaret de Brus d. Bef 30 Jan 1306/07
- 3 Robert de Roos
- 3 William de Roos d. Bef 12 Mar 1309/10
- Elizabeth
- 4 Thomas de Roos Baron of Kendal b. Abt 1307 [ =>]
- Elizabeth
- Margaret de Brus d. Bef 30 Jan 1306/07
- Christian Bertram